Toggle.



P. C. STINGEL.

TOGGLE.

APPLICATION FILED APJLSO, 1913 1,070,996, Patented Aug. 19, 1913.

COLUMBIA PuNuoRAPl-l $0.. WASHINGTON. B- :4

UNITED STATES PATENT OFFICE.

PHILIP C. STING-EL, 0F MEIDFOBD, MASSACHUSETTS, ASSIGN'OR TO ECONOMY TOGG'LE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TOGG-LE.

Specification of Letters Patent.

Application filed April 30, 1913.

Patented Aug. 19, 1913. Serial No. 764,671.

To all whom it may concern:

Be it known that I, PHILIP C. STINGEL, of Medford, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Toggles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

My invention relates to an improvement in toggles of that type especially adapted for holding and stretching leather and skins during the dressing or enameling thereof as in the making of patent or enamel leather.

As is well known to those skilled in the art. toggles used for these purposes have a cord attached to them and the application or manner of using the toggle is as follows: A hole is formed in the skin adjacent its edge. The cord is passed upwardlythrough this hole, or, if possible, the toggle is passed downwardly through the same, the operation, in other words, being such that the toggle will lie on the under slde of the skin with the cord passing upwardly through the hole in the skin. The cord is then drawn clownwardly around the toggle and skin at theforward end of the hole and passed upwardly through the hole and around the toggle, after which the cord is drawn taut and secured to the frame or other fixture of support in which the skin or leather is stretched.

It might be supposed at first thought that the making of a toggle would be a very simple and apparent matter, but this is negatived by the great variety of toggles made each of which possesses some particular advantage or advantages. The difficulty of providing an eflicient toggle, however, can better be appreciated when the conditions to be met are understood and what qualities an efficient toggle should possess.

In the first place the toggle and attached cord should be such that it can be made at a very small cost for material and by automatic machinery, for the reason that toggles can be used but once owing to the fact that the dressing or enameling placed upon the skin becomes daubed onto the cord and thereby prevents the toggle being used again. It is therefore apparent when consideration is made of the number of toggles used for a single skin that the toggle must i be one capable of being manufactured at a very small cost. I

The toggle should be so formed and the connecting cord so attached that the toggle will grip the skin at the sides of the hole in it instead of at the forward edge else, when the toggle is subjected to strain, it will tear away from the skin, it being understood of course that the hole formed in the skin is made as near the edge as possible to save material. For this purpose some toggles are so made that when the cord is passed around the toggle as above described the toggle will cause the skin to curl, the toggle then hearing against the skin within the curl on opposite sides of the hole. The greater the strain on the skin, the more the toggle will cause the skin to curl, and accordingly the toggle will bear on opposite sides of the hole against the skin a distance from the edge thereof gradually increasing as the curl increases and this, as said before, depending upon the amount of the strain. Various toggles possess the capability of causing this curl, but some of the toggles, especially those made of wood, are so large and cumbersome as to produce a large curl in the skin thereby making great waste, for the skin cannot be properly coated or enameled at the point of the curl. Other toggles made of metal possessing the advantage of causing the curl are either so small as to make an 1 inefficient curl in the skin or else out or tear away from the same when subjected to considerable strain, especially those made of wire. If the size of the wire be increased then the toggle becomes heavy and cumbersome and cost of material prohibits its use.

The manipulation of the toggle, especially the facility of attaching it to the skin and threading the cord through the hole, is also a material consideration, it being especially desirable that the toggle be so small that in the first instance it may pass downwardly through the skin to lie beneath the same.

It is hardly necessary to add that all toggles should possess suflicient strength to Withstand the strain to which they are subjected and the cord should have such mode of attachment as to be incapable of becoming detached from the toggle;

The object of my invention is to provide a toggle possessing all of the advantages above ponited out and this moreover in a marked degree.

My improved toggle can best be seen and understood by reference to the drawings, in which Figure 1 is a plan of the toggle, the toggle proper being shown in. longitudinal sec tion. Fig. 2 is a plan of the complete toggle. Fig. 3 is a section on the line 3-3 of Fig. 1. Fig. is a section on the line 47-4 of Fig. 2. Fig. 5 is a plan of the under side of a piece of skin or leather and toggle attached thereto, the view showing the initial position of the toggle before the cord is drawn taut. Fig. 6 is a section on the line 6-G of Fig. Fig. 7 is a plan substantially like that shown in Fig. 5, excepting that it shows the changed position of the toggle incident to an increased draft upon the connecting cord, and Fig. 8 is a section on the line S-8 of Fig. 7.

Referring to the drawings :1 represents the toggle, 2 the cord connecting with it, 3 a piece of leather having a hole at formed in it adjacent its edge.

The toggle 1 is made of sheet metal plate rolled into the form of a tube. At the longitudinal center of the toggle the rolling of the plate is such as to provide abutting edges 5, (3, which substantially meet, just sufficient space being left between these edges to permit of the passage of the cord between them to become bound, as will later be explained. From the longitudinal center of the toggle and extending outwardly in both directions to the respective ends thereof the toggle is rolled to provide edges 7, 8, which overlap, the overlap of these edges gradually increasing to the ends of the toggle with the effect that the toggle has a slightly less diametrical size at the ends than at its longitudinal center.

The cord 2 is secured to the toggle in the following manner: A portion 9 of the cord adjacent one end is laid within the toggle to extend from a point at 01' adjacent one end to the longitudinal center of the toggle, and is bound within the body of the toggle during its rolling and formation as above described. At the longitudinal center of the toggle the cord 2 is bent at an angle to extend transversely from the side of the toggle, the cord passing between the edges 5, G, to become bound by these edges during the formation of the toggle at the point 10, the binding of the cord at this point supplementing its retention from within the body of the toggle.

I have found also that the operation of the toggle is improved by bending the same as shown. In other words, the toggle is made slightly bowed, its concavity lying on the side from which the cord extends.

The application of the toggle to the leather and its subsequent operation are as follows :The tog 'le is first passed down- \vardly through the hole in the leather from the upper side, thereof, the size of the toggle easily peri'i'iitting of this operation. The toggle will then lie on the under side of the leather with the cord passing upwardly through the hole in the leather. The cord is then drawn downwardly around the toggle and portion 12 of the leather at the forward edge of the hole and is then passed upwardly through the hole and around the toggle. The cord is then drawn taut. With a slight draft upon the cord the toggle will assume a position substantially as shown in F 5 and 7 where it will be seen that the toggle is hearing against the leather on opposite sides of the hole. The position of the toggle is also such that its concave side, or that side from which the cord extends, faces the edge of the leather. By increasing the draft. upon the cord the toggle will become turned causing the leather to curl and bear against the leather on opposite sides of the hole farther away from the edge of the leather than when in its afore-described initial position or when the draft upon the cord is slight. As the draft upon the cord increases the toggle will become turned to a position substantially as shown in Figs. 7 and 8 where it has become turned to a position in which the concave side thereof is facing in a direction toward the body of the leather or diametrically opposite that shown in Fig. 5. \Vhen the toggle is in this posi' tien the leather will have become sufliciently curled that the toggle will engage the leather on opposite sides of the hole a sufiicient distance away from the edge of the leather as to insure a long bearing surface against the leather which accordingly eliminates danger of the toggle pulling away from the leather.

The bending of the toggle enables it to fit smoothly within the curl of the leather with an even bearing, very little of the leather being distorted by the toggle. In this connection see Fig. 7.

The cost of material for making a toggle of the kind described is very slight and the toggle can be made and the cord attached by automatic machinery, the attachment of the cord requiring no further operation than that incident to the formation of the toggle.

The toggle is relatively small and causes but a slight curl in the leather. Its size in diametrical cross section throughout, however, is such as to insure a proper bearing against the leather without danger of cuting the same. In other words, a toggle of the size of the present one could not be made of wood for it would not stand the strain and if made from a solid metal bar its cost would be prohibitive, to say nothing of the difficulty of attaching the cord to such a bar. The toggle exerts an even pull upon the leather inasmuch as it presents a smooth cylindrical surface throughout.

The rolling of the metal into the form of a tube gives great strength to the toggle and the cord becomes bound to it in such a manner as to be incapable of being detached from the toggle under any circumstance of use to which it may be subjected in the holding or stretching of skins or leather.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States l. A toggle of the character specified comprising a tubular body of rolled sheet metal and a cord connecting therewith, one end of which cord lies bound within and by said body of the toggle, and which cord extends from the interior of said body transversely through the side thereof.

2. A toggle of the character specified comprising a tubular body of rolled sheet metal having an opening therein at about its longi tudinal center and a cord connecting therewith to extend from the hollow interior of said body transversely through said opening.

3. A toggle of the character specified comprising a tubular body of rolled sheet metal and a cord connecting therewith, said cord extending longitudinally through the interior of said body to about the longitudinal where the cord is angularly turned to extend between said abutting edges thereof transversely from said body.

5. A toggle of the character specified comprising a tubular body of rolled sheet metal and a cord connecting therewith, one end of which cord lies bound within and by said body of the toggle, and which cord extends from the interior of said body transversely through the side thereof, said tubular body of the toggle being bent to provide a concavity on the side thereof from which the cord extends.

PHILIP O. STINGEL.

WVitnesses:

JOHN E. R. HAYES, M. E. FLAHERTY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. 

